I (OP) think DPPt is the most probable thing due to the major references to Sinnoh they did in Alola (specially talking about Palkia, Giratina and Bronzong, involving them in the Wormholes theories), while it also being this year the 10th anniversary of DP in Japan; Cynthia's model is already done; and thanks to Kanto's massive dicksucking with Origins and Virtual Console releases, as well as ORAS, Sinnoh officially has become the oldest region.
It would make a lot of sense to remake it and put GSC in Virtual Console to make every region (except for Unova) fully compatible with the 3DS, which will mostly have a year of two before it's death.
